First Evaluation of Aquarius Soil Moisture Products Using In Situ Observations and GLDAS Model Simulations

	First Evaluation of Aquarius Soil Moisture Products Using In Situ Observations and GLDAS Model Simulations
	Li, Dongyang 1; Zhao, Tianjie 1; Shi, Jiancheng 1; Bindlish, Rajat 1; Jackson, Thomas J.1; Peng, Bin 1; An, Meng 1; Han, Bo 1
刊名	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
	2015
卷号	8 期号:12 页码:3923-3945
关键词	Aquarius global land data assimilation system (GLDAS) international soil moisture network (ISMN) soil climate analysis network (SCAN) soil moisture (SM) validation
通讯作者	Zhao, TJ (reprint author), Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth RADI, Beijing 100101, Peoples R China.
英文摘要	L-band satellite remote sensing is one of the most promising techniques for global monitoring of soil moisture (SM). In addition to soil moisture and ocean salinity (SMOS) SM products, another global SM product has been developed using Aquarius, which is the first operational active/passive L-band satellite sensor. The spatial resolution of Aquarius SM products is about 100 km, which presents more challenges to the ground-based validation. This study explores approaches to validate and evaluate the Aquarius SM products in terms of their spatial and temporal distributions, through synergistic use of in situ measurements and model products from the global land data assimilation system (GLDAS). A dense soil moisture/temperature monitoring network over the central Tibetan plateau (CTP-SMTMN) and sparse stations from the soil climate analysis network (SCAN) over United States are used for the reliability assessment of Aquarius SM products. Results show that the Aquarius SM captures the spatial-temporal variability of CTP-SMTMN reference dataset with an overall RMSD of 0.078 m(3) . m(-3) and correlation coefficient of 0.767. The comparison results with reference to SCAN datasets suggest that the RMSD can reach to the target value of 0.04 m(3) . m(-3) over specific stations, but the impacts from different orbits, seasons, and land cover types are also found to be significant. The comparison between Aquarius retrievals and GLDAS/common land model (CLM) simulations presents a general well statistical agreement with correlation coefficients above 0.5 for most terrestrial areas. These results are considered to support the use of Aquarius SM products in future applications.
研究领域[WOS]	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000370519700013
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38044]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.[Li, Dongyang 2.Zhao, Tianjie 3.Shi, Jiancheng 4.Peng, Bin] Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth RADI, Beijing 100101, Peoples R China 5.[Li, Dongyang 6.Zhao, Tianjie 7.Shi, Jiancheng 8.Peng, Bin] Joint Ctr Global Change Studies, Beijing 100875, Peoples R China 9.[Bindlish, Rajat 10.Jackson, Thomas J.] ARS, Hydrol & Remote Sensing Lab, USDA, Beltsville, MD 20705 USA
推荐引用方式 GB/T 7714	Li, Dongyang,Zhao, Tianjie,Shi, Jiancheng,et al. First Evaluation of Aquarius Soil Moisture Products Using In Situ Observations and GLDAS Model Simulations[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2015,8(12):3923-3945.
APA	Li, Dongyang.,Zhao, Tianjie.,Shi, Jiancheng.,Bindlish, Rajat.,Jackson, Thomas J..,...&Han, Bo.(2015).First Evaluation of Aquarius Soil Moisture Products Using In Situ Observations and GLDAS Model Simulations.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,8(12),3923-3945.
MLA	Li, Dongyang,et al."First Evaluation of Aquarius Soil Moisture Products Using In Situ Observations and GLDAS Model Simulations".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 8.12(2015):3923-3945.